I stretch a rubber band and and slide it passed it should cut it not slide it out of the way. the band is like connective tissue and veins. you want it to cut not slide past

How do you know if a broad head is sharp enough?

Use SlickTricks

It should catch on your thumb nail. Using little or no pressure, try and slide it side to side... if it catches.. it should be sharp enough... if it slides... no way I'm shooting it. Problem with undertakers is that there isn't really a good way to touch up those blades... most Rockets I've messed with have been lacking in the sharp department... and the Undertakers I checked out last week were woefully dull.

Toss it in the air and catch it in your mouth like popcorn.

Ifyou have to make a trip to the ER, it's sharp enough.